Martinez signed a five-year, $18 million contract extension with the Diamondbacks on Friday, Alex D'Agostino of SI.com reports.
In addition to covering him for 2025, Martinez's new deal will buy out his three arbitration years and includes club options for 2030 and 2031, giving him immediate financial security while the Diamondbacks get their young, hard-throwing reliever locked into a team-friendly deal. Martinez turned in a 2.48 ERA and 1.31 WHIP with 91 strikeouts over 72.2 innings during his first full season in the majors last year, though it's still unknown if he, A.J. Puk or Kevin Ginkel will be the preferred ninth-inning option once the regular season begins.